/**
 * Copyright (c) 2015-2017, Winter Lau (javayou@gmail.com).
 *
 * <p>Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License at
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.oschina.j2cache.util;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

/**
 * 使用 Kryo 实现序列化
 *
 * @author Winter Lau(javayou@gmail.com)
 */
public class KryoSerializer implements Serializer {
  @Override
  public String name() {
    return "kryo";
  }

  @Override
  public byte[] serialize(Object obj) {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    try (Output output = new Output(byteArrayOutputStream); ) {
      new Kryo().writeClassAndObject(output, obj);
      output.flush();
      return byteArrayOutputStream.toByteArray();
    }
  }

  @Override
  public Object deserialize(byte[] bits) {
    if (bits == null || bits.length == 0) {
      return null;
    }
    try (Input ois = new Input(new ByteArrayInputStream(bits))) {
      return new Kryo().readClassAndObject(ois);
    }
  }
}
